ZANGI application is a communication system and a cross-platform engine available in any environment: IPhone, IPad, IPod, ... Facebook, and also an html version in ZANGI website. For free international voice and video calls you only need internet connection. Become a ZANGI user and enjoy a number of advantages, for example, the Callback feature. ZANGI connects people from all the world even in slow internet connection. With ZANGI free roaming services you will be available in any country of the world. If you don't have internet connection do not worry about that, because ZANGI already takes care of it. Just enjoy HD voice and video calls.